Abrasive Particles And Production Method Thereof

A method of producing abrasive particles, comprising:

• forming an intermediate layer containing a Ce salt and a salt of at least one element selected from the group consisting of Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, In, Sn, Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, W, Bi, Th, and alkali earth metals;
• forming a shell layer mainly composed of a Ce salt on an outer surface of the intermediate layer by adding an aqueous solution containing a Ce salt to a second dispersion containing the dispersed particles as the intermediate layer of the salts formed in the intermediate layer-forming step;
• separating the solid being an abrasive material precursor from a third dispersion prepared in the shell layer-forming step;
• and
• firing the abrasive material precursor prepared in the separation step in the air or in an oxidizing atmosphere.

A method of producing abrasive particles, comprising:

• forming a core layer mainly composed of a salt of at least one element selected from the group consisting of Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, In, Sn, Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, W, Bi, Th, and alkali earth metals through formation of the salt;
• forming an intermediate layer containing a Ce salt and a salt of at least one element selected from the group consisting of Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, In, Sn, Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, W, Bi, Th, and alkali earth metals on an outer surface of the core layer by adding an aqueous solution containing at least one element selected from the group consisting of Al, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, In, Sn, Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, W, Bi, Th, and alkali earth metals and an aqueous solution containing a Ce salt to a first dispersion containing the dispersed particles of the salt of the element formed in the core layer-forming step;
• forming a shell layer mainly composed of a Ce salt on an outer surface of the intermediate layer by adding an aqueous solution containing a Ce salt to a second dispersion containing the dispersed particles provided with the intermediate layer of the salts formed in the intermediate layer-forming step;
• separating the solid being an abrasive material precursor from a third dispersion prepared in the shell layer-forming step;
• and
• firing the abrasive material precursor prepared in the separation step in the air or in an oxidizing atmosphere.